Sergeant-at-Law in 1357 (31 «b»Edward III«/b»), one of the Justices of the King's Bench in 1359 (33 «b»Edward III«/b»), «u»Lord Chief Justice <http://www.tudorplace.com.ar/Documents/lord_chief_justice.htm>«/u» in 1365 (39 «b»Edward III«/b»), and «u»Lord Chancellor <http://www.tudorplace.com.ar/Documents/Lords%20Chancellors.htm>«/u» of England in 1375 (49 «b»Edward III«/b»). He was one of the Executors of the Will of «b»King Edward III«/b», dated 7 Oct 1376. The Inquisition Post Mortem at the time of «b»John Knyvett«/b»'s death showed him to have held a vast extent of property in Cambridge, Northampton, and other Counties.